Add a Java implementation of packed formats.

Also add a test case and update the layout of the Java build.

1 files changed, 304 insertions, 0 deletions

diff --git a/test/java/com/wiredtiger/test/PackTest.java b/test/java/com/wiredtiger/test/PackTest.java
new file mode 100644
index 00000000000..abf09eb8f02
--- /dev/null
+++ b/test/java/com/wiredtiger/test/PackTest.java
@@ -0,0 +1,304 @@
+package com.wiredtiger.test;
+
+import com.wiredtiger.db.PackInputStream;
+import com.wiredtiger.db.PackOutputStream;
+import com.wiredtiger.db.WiredTigerPackingException;
+
+public class PackTest {
+
+	private void printByteArray(byte[] bytes, int len) {
+		for (int i = 0; i <= len; i++) {
+			System.out.println(String.format(
+				"\t%8s", Integer.toBinaryString(
+				bytes[i] & 0xff)).replace(' ', '0'));
+		}
+	}
+
+	static void TestPack01() {
+		String format = "b";
+		PackInputStream packer = new PackInputStream(format);
+		try {
+			packer.addFieldByte((byte)8);
+		} catch (WiredTigerPackingException wtpe) {
+			System.out.println("Error packing: " + wtpe);
+		}
+
+		if (!format.equals(packer.getFormat())) {
+			System.out.println(
+			    "Format string mismatch. Expected: " +
+			    format + " got: " + packer.getFormat());
+		}
+		byte[] packed = packer.getValue();
+		System.out.println("Format: " + format);
+		System.out.println("Packed: " +
+		    Integer.toBinaryString(packed[0] & 0xff));
+
+		PackOutputStream unpacker =
+			new PackOutputStream(format, packed);
+		try {
+			if (unpacker.getFieldByte() != (byte)8)
+				System.out.println("unpack mismatch.");
+		} catch (WiredTigerPackingException wtpe) {
+			System.out.println("Error unpacking: " + wtpe);
+		}
+	}
+
+	static void TestPack02() {
+		String format = "biqrhS";
+		PackInputStream packer = new PackInputStream(format);
+		try {
+			packer.addFieldByte((byte)8);
+			packer.addFieldInt(124);
+			packer.addFieldLong(1240978);
+			packer.addFieldRecord(5680234);
+			packer.addFieldShort((short)8576);
+			packer.addFieldString("Hello string");
+		} catch (WiredTigerPackingException wtpe) {
+			System.out.println("Error packing: " + wtpe);
+		}
+
+		if (!format.equals(packer.getFormat())) {
+			System.out.println(
+			    "Format string mismatch. Expected: " +
+			    format + " got: " + packer.getFormat());
+		}
+		byte[] packed = packer.getValue();
+		System.out.println("Format: " + format);
+		System.out.println("Packed: " + new String(packed));
+
+		PackOutputStream unpacker =
+			new PackOutputStream(format, packed);
+		try {
+			if (unpacker.getFieldByte() != (byte)8)
+				System.out.println("unpack mismatch 1.");
+			if (unpacker.getFieldInt() != 124)
+				System.out.println("unpack mismatch 3.");
+			if (unpacker.getFieldLong() != 1240978)
+				System.out.println("unpack mismatch 4.");
+			if (unpacker.getFieldRecord() != 5680234)
+				System.out.println("unpack mismatch 5.");
+			if (unpacker.getFieldShort() != 8576)
+				System.out.println("unpack mismatch 6.");
+			if (!unpacker.getFieldString().equals("Hello string"))
+				System.out.println("unpack mismatch 7.");
+		} catch (WiredTigerPackingException wtpe) {
+			System.out.println("Error unpacking: " + wtpe);
+		}
+	}
+
+	static void TestUnpack() {
+	}
+
+	static void TestPackUnpackNumber() {
+		long[] testers = {
+			-12,
+			-145,
+			-14135,
+			-1352308572,
+			-1,
+			0,
+			1,
+			12,
+			145,
+			12314,
+			873593485,
+			-30194371,
+			-4578928,
+			75452136,
+			-28619244,
+			93580892,
+			83350219,
+			27407091,
+			-82413912,
+			-727169,
+			-3748613,
+			54046160,
+			-49539872,
+			-4517158,
+			20397230,
+			-68522195,
+			61663315,
+			-6009306,
+			-57778143,
+			-97631892,
+			-62388819,
+			23581637,
+			2417807,
+			-17761744,
+			-4174142,
+			92685293,
+			84597598,
+			-83143925,
+			95302021,
+			90888796,
+			88697909,
+			-89601258,
+			93585507,
+			63705051,
+			51191732,
+			60900034,
+			-93016118,
+			-68693051,
+			-49366599,
+			-90203871,
+			58404039,
+			-79195628,
+			-98043222,
+			35325799,
+			47942822,
+			11582824,
+			93322027,
+			71799760,
+			65114434,
+			42851643,
+			69146495,
+			-86855643,
+			40073283,
+			1956899,
+			28090147,
+			71274080,
+			-95192279,
+			-30641467,
+			-1142067,
+			-32599515,
+			92478069,
+			-90277478,
+			-39370258,
+			-77673053,
+			82435569,
+			88167012,
+			-39048877,
+			96895962,
+			-8587864,
+			-70095341,
+			49508886,
+			69912387,
+			24311011,
+			-58758419,
+			63228782,
+			-52050021,
+			24687766,
+			34342885,
+			97830395,
+			74658034,
+			-9715954,
+			-76120311,
+			-63117710,
+			-19312535,
+			42829521,
+			32389638,
+			-51273506,
+			16329653,
+			-39061706,
+			-9931233,
+			42174615,
+			75412082,
+			-26236331,
+			57741055,
+			-17577762,
+			3605997,
+			-73993355,
+			-54545904,
+			-86580638,
+			84432898,
+			-83573465,
+			-1278,
+			636,
+			-9935,
+			9847,
+			8300,
+			-5170,
+			-2501,
+			6031,
+			-6658,
+			-9780,
+			-5351,
+			6573,
+			-5582,
+			-1994,
+			-7498,
+			-5190,
+			7710,
+			-8125,
+			-6478,
+			3670,
+			4293,
+			1903,
+			2367,
+			3501,
+			841,
+			-1718,
+			-2303,
+			-670,
+			9668,
+			8391,
+			3719,
+			1453,
+			7203,
+			-9693,
+			1294,
+			-3549,
+			-8941,
+			-5455,
+			30,
+			2773,
+			8354,
+			7272,
+			-9794,
+			-4806,
+			-7091,
+			-8404,
+			8297,
+			-4093,
+			-9890,
+			-4948,
+			-38,
+			-66,
+			-12,
+			9,
+			50,
+			-26,
+			4,
+			-25,
+			62,
+			2,
+			47,
+			-40,
+			-22,
+			-87,
+			75,
+			-43,
+			-51,
+			65,
+			7,
+			-17,
+			-90,
+			-27,
+			56,
+			-60,
+			27
+		};
+		/* Need to update..
+		PackInputStream packer = new PackInputStream();
+		PackOutputStream unpacker = new PackOutputStream();
+		for (long i:testers) {
+			byte[] bytes = new byte[21];
+			int len = packer.packLong(bytes, i);
+			System.out.println(i);
+			printByteArray(bytes, len);
+			// Verify that unpack works.
+			long unpacked = unpacker.unpackLong(bytes);
+			if (i != unpacked)
+				System.out.println(
+					i + " did not match " + unpacked);
+		}
+		*/
+	}
+
+	public static void main(String[] args) {
+		TestPack01();
+		TestPack02();
+		TestUnpack();
+		TestPackUnpackNumber();
+	}
+}